rtc: rtc-nuc900: fix loop timeout test

commit d0a67c372df410b579197ea818596001fe20070d upstream.

We should change this post-op to a pre-op because we want the loop to
exit with "timeout" set to zero.

Fixes: 0a89b55364e0 ("nuc900/rtc: change the waiting for device ready implement")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/rtc/rtc-nuc900.c b/drivers/rtc/rtc-nuc900.c
index 781068d..5e6c08e 100644 (file)
--- a/drivers/rtc/rtc-nuc900.c
+++ b/drivers/rtc/rtc-nuc900.c
@@ -93,7 +93,7 @@ static int *check_rtc_access_enable(struct nuc900_rtc *nuc900_rtc)
        __raw_writel(AERPOWERON, nuc900_rtc->rtc_reg + REG_RTC_AER);
 
        while (!(__raw_readl(nuc900_rtc->rtc_reg + REG_RTC_AER) & AERRWENB)
-                                                               && timeout--)
+                                                               && --timeout)
                mdelay(1);
 
        if (!timeout)